Angular drive



Patented July 29, 1 952 Milwaukee 4Electric:Tool Corporation, `Milivrnb.

y .The-:presentsmventionprelateszsimgeneral,tofimf prowements t in the art: of rotary motion: "transf mission,- a-nd;. relates. more lparticularly tto: im, provements inv the construction andioperation of drivesiortransmitting rotary.motion at anfangle fzromfa` sourceofxpower. to `Jazdriven member.

'.Thefprimaryobject of ,my Iinvention` is to. provide an i .-improved positive drive rfor-.11` transmite tingfrotary motion. fromffone.` shaftzor :the like .to another, -which-.r-isfsimple' and compactfin construetionpefficientin operationfand-exible in its adaptations. Y f "Somexof the more-important specicobjects ofthe inventionI areg` as follows; f

To provideari-reversiblegear dri-verfor positively-and effectively"transmitting-frotary motion frornlra idriving to1 fa driven lmemberi at 1 definite speeds; `'1"o-provideanfexceedinglycompact fand duraEIe-pwertransmitting lunit-especially-fcooperaalfle 5i'iiri-h` portableg-driving motors anddiverse tools; and vvhichlisfadapted for quick reversal so asto`i propelthe drivenitools-at"severalspeeds.V -fiTo iarov'idevv anqimproved right angle `driving assernilageA embodying bevel*rnotion transmitting gea-rsywhilfi'earejournallediinanti-friction 4bear- 4-'effectivelyhc)used Withinfasturdy'casing.

fToprovide-an improvedrotary motionftransirritating` jdevieewhich "may befconveniently "aj-nd eiectively couledwta drivinggshaft and suspended' from theshaft-mounting'- of the ndriving mechamism;k

driveY in-whichth'e' gears and lbearingsmay be abundantlyilubricated land VareA constantly `protectivelyconcealedi'. v l l ""Io provideranimprovedpower-transmittingasf sei'zilily'-or` transferringrotarymotion atvan angle yrelativei'to the` axis-#of :rotation l-offfthe/drivingmemb er, andmeans for facilitatingmanipulation efthe :driven member :in cramped: and :relatively inaccessible; plaeesi t u 1 l 'I-ofprovide a sturdy:andcompactxmotion transf, vinittinfg';:unit 'Ladaptedriso timaixisfer;v `:rotarymotion from@onetpshaitfato4 another atta,,rightn-tanglefwith minimnmgfrietionrlossi: and which; may be con-1 veniently-appliedtoior removed'irom' thedriving source.;l Y l x '}1 o\r;.providee an; .improved angle- :drive inechaf nism which is capable of being disposed in Varioustpositonsito effeGtwlvY transmit rotary@ m0- tiorrfrom a-.-dr i1vi1 1sfshaft;fto afdrvenfshaitand' whichimaxfbemanuiaeturedand suldr-tr-diverse usesfqiifmoderetecostfl miese-flans somerset-and.- V @www -.f.

the presenttinvention. ill ,beapparentfroxn the followingjdetailed description. l

.Acclear coneeptionofrthe irnproved features constituting.myfinvention and, of the construel tion andfoperationpf .a :typical right .angle driv.-

ing ,u nit embodyingtthe same, may be .hadby referringgto the drawing accoizrinanyirig` form: ins' apart ofi-this specication whereinlike refer?- encecharacters designateV the same or .similar pantsfinthesseveral Niews, i f Fig, 1V VVis anexternal-view orelevation of a typcalwright;.angledriye lembodying the inventionffand associatediwith aspower shaft Etot obtain reducedfspeed Vof rotation-gat :the driven member; and v .The :gist V-poff--the Ipresent invention istheggprof Vision of a compact angle drive iorvrtransnlitting rotary `motion fromy-a :drivingsource .to a driven memberi Aataeither of `twg),rspeecls.,and having means; for facilitating; manipulation i and4 for readiltf. imcuntingstfandv driving-ly.; connecting- Ythe unit, -andzgwhiles'only one ,itypicalg embodiment fof theiinventionihas been "shownzfand described .it is notrmydesireaor'mtent to'ilnnenessarilydlimit the utilityof the improvedifeaturesbyvirtue of this restrictedfshowingg :It is moreover contemplated that -zfspecicfzdescriptive .f terms; :used herein be given the broadest v.fpossilalef; interpretation con- Sistent:withtheiactualdisclosure; Y

"Referringtoethezdrawing, thejmprovectmotion transmitting;v iunit v)illustratedatherei-n comprises infigenenall;aiunitarys-rigid casing orahollowibody 5fl'avingitlrereinJtWofrhoresaoriopenings V(i, f1 directed perpendicular to each other toward-a .comel inon`l -point l-v'v-ithin z-.the fbo'dy; a shaft `8 :disposed coaxially ofzthebored o peninggr andloeingrrjour-,v nailed. for Vrotation in z'anti-irietion;` bearing-s 9, 'I 0 mounted infthe casing r'body 5 i, another.V shaft 1II disposedicosndallly offthe bored` openingz] :and being"l journalledt for. "rotation: ini'` anti-friction bearings I 2,: [31 mounted. 4initlfie-.casing bodya; 4a bevel-gear fsecur'edfzto the shaft 8 ibetweenzthe bearings-18;" inland meshingzwithva bevelzgear `I5 secured? tothef-v shaftfl Il between the bearings l '25? l; =a sleeve-couplingl 6 intercliangeably driv: inglyfcoop'erablewithiidentical :flattened 'por-tions II 1 formed onA the'v outerwardly protruding ends of? theitwo shafts 8;;- fl"r| la 'splitv ymounting-fslz'eeve 18'elampinglyjcooperablewith either of'ftwo simi- `1ar'outer annular surfaces; |19 "`formedjonlthelbody 5f ereundthe Openings'i 1:, and"alf-111erirriulat-4 iris iandlel andaizcepscrtew vribOlHl lcoeper'- the opposite ends of the latter upon a surface I9 and to a support.

The casing body 5 is preferably formed of a one-piece casting of durable metal and is internally inaccessible except through the bored openings 6, 1, and the interior of the body 5 is provided with` an integral bos s ,24. vThe two shafts 8,- vII areof somewhat -similar construction, each being provided with an identical screw threaded extreme outer end beyond the attened portion I1 thereof, and with a reduced extreme inner end 28. The larger anti-friction bearings 9, I2 which coact with the shafts 8,

II, within the openings 5, 1 respectively,-are of the sealed ball type of well Vknown construction, l

"annular surface I9 disposed within the other end of the mounting sleeve I8, whereupon the handle v'28 andbolt 2l may be applied to the ears 22 to being sealed by thin plates 21; and the smaller anti-friction bearings I0, I3 which coact with the inner reduced ends 26 of these shafts 8, II respectively are of the roller type also of well known construction, being mounted within bores in the rigid boss 24 as illustrated in Fig. 2.

The bevel gears I4, I5 are vof different sizes and may be firmly fastened to their respective shafts 8, II in any suitable manner, and the ball bearings 9, I2 are detachably secured within the openings 6, `1 by meansof snap rings 28 while these openings 6, 1 are made sufficiently large to permit insertion and removal of 'the adjacent gears I4, I5 therethrough when the snap rings 28 are removed. A removable split stop ring 29 may also be provided linwardly of the largest ball bearing I2, as shown, and the entire interior of the body 5 should normally be filled with suitable lubricant which will be 'confined within the gear chamber by the plates 21. An extremely compact rotary motion transmitting gear box or unit in which the gears I4, I5 are thoroughly lubricated and effectively protected, is thus provided. The sleeve coupling I6 which may also be formed of durable metal such as steel, has a socket at oneend adapted to be snugly applied to either of the'flattened identical shaft portions I1,- and is provided at itsV opposite end with internal screw threads 3l, whilefits medial portion is` provided with a bore 32 of larger diameter than the threaded shaft ends 25. The internal screw threads 3| of the coupling I6 may be formed to cooperate with the threads of the outer shaft ends 25 so that the coupling may be reversibly applied' to either shaft 8, -I I, but as shown, a rotary power shaftv33 has been drivingly applied to the internal coupling threads 3| whereby the unit is adapted to drive the shaft II-at a slowerY rotary speed than that of the shaft 8. .y J The power shaft 33 may be Apositively rotated at any desired speed .by an -electric or other type of rotary motor, and is journalled for rotation in a portable support 35 shown in dot-anddash lines in the drawing. The mounting sleeve I8 for the motion transmitting unitinay be formed of resilient metal and is split longitudinally so that when the threaded shanks of the manipulating handle 20 and of the bolt 2| .are released, the split sleeve I8 will spread and will be readily removable from or applicable toeither of the annular surfaces Iagofthebody 5, and to a similar surface formed on the Support 35. The threaded Shanks ofthe handle 2 Il and of the bolt 2I may be appliedto either set of the clamping ears 22 which arerigidly attached to the opposite Vends of the 'sleeve vI8 adjacent to the split, and the handle 20 maybe lutilized to placethe driven" shaft in 'any desired position and to retain it in such position.

'drivingly connect the shaft 33 with the adjacent shaft of the unit and to simultaneously clamp the body 5 to the support 35.

Ifthe power shaft 33 is thus drivingly connected to the shaft 8 as illustrated in the drawing, then the other shaft II of the drive will be rotatable at slower speed than the shaft II, but if the power shaft 33 is interchangeably drivingly connected to the shaft II the other shaft 8 will be driven at higher speed, by Virtue of the different sizes of the gears I4, I5. After the improved unit has been properly installed to produce the desired operating conditions, a rotary tool such as a` drill, may be secured to the protruding free end of the driven shaft either by direct screw thread attachment to the exposed shaft end-25 or with the aid of another sleeve ,coupling ,'I6. The driving motor may then be operated at will to rotate the tool, andthe handle 28 may thereafter be manipulated to `direct and guide the rotating tool in any desired direction.

Y From the foregoing detailed description, it will be apparent that the invention provides a simple and exceedingly compact and durable motion transmitting unit which is very flexible in) adaptation and may be operated at high orrlow speed with equal eiiciency. The unitary gear housing body 5 is of sturdy construction and effectively protects the bevel gears I4, I5; while the anti-v friction bearings disposed on the opposite sides of each of these gears and which also are protected by the housing, provide elcient supports for the shafts 8, II and for the gears I4, I5. The shafts 8, Il may also be disposed at any desired angle relative to each other, and by form-,- ing these shafts withA similar protruding end portions I1, 25 the coupling IB may be reversibly attached to either end of either shaft and power may also be applied to either shaft end in order to obtain the selected speed ofthe driven shaft,

VThe improved mounting sleeve I8 also provides simple means for firmly supporting the unit at either.- of ,theA annular surfaces I9, and the handle 20'and cap screw or bolt 2I serves to firmly clamp the split sleeve to the body 5 and toa support 35. The` handle 28 also permits convenient movement of the body. 5 into variouspositions in order to properly direct and guide the driven tool relative to the workin cramped localities, thus rproducing an extremely flexible assemblage adapted for diverse uses. The various parts lof the geared rotary motion transmitting unit may also bev readily assembled or dismantled, and these units may be manufactured yin various sizes and for various purposes at moderate cost.y v

It should be understood that it is not desired to limit this invention to the exact details of construction or to the precise mode of operation of the angular drive herein specifically illustrated and described, for various modifications within the scope of the appended claims may occur to persons skilled in the art.

I claim:

1. In a universally positionable angular drive unit for transmitting rotary motion from a power source to diverse tools, a one-piece hollow body having therein two circular access openings directed axially at approximately 90 relative to each other toward a common point of intersection of the opening axes within the body and also having therein an integral boss bored coaxially of each opening and located near said intersection point remote from the corresponding open ing, alined anti-friction bearings detachably conned within each of said openings and within its coaxial boss bore, a shaft journalled for rotation within each alined set of said anti-friction bearings, each of said shafts having an end projecting outwardly of said body and provided with a polygonal section and a male threaded tool attachment end of lesser diameter than the distance across the ats of the adjacent polygonal section, an adapter coupling having one end provided with a polygonal socket interchangeably drivingly ccoperable with said polygonal shaft sections and being provided at its opposite end with female screw threads attachable to a driving source, and a pair of intermeshing bevel gears of diierent pitch diameters secured to said shafts in the spaces between said alined sets of bearings.

2. In a universally positionable angular drive unit for transmitting rotary motion from a power source to diverse tools. a one-piece hollow body having therein two circular access openings directed axially at approximately 90 relative toV each other ltoward a common point of intersection of the opening axes within the body and also having therein an integral boss bored coaxially of each opening and located near said intersection point remote from the corresponding opening, alined anti-friction bearings detachably conned within each of said openings and within its coaxial boss bore, a shaft journalled for rotation within each alined set of said anti-friction bearings. each of said shafts having an inner end of smallest diameter journalled in one of said boss bearings and an opposite end portion of larger diameter journalled in the corresponding opening bearing and provided with a polygonal section and a male threaded tool attachment end of lesser diameter than the distance across the ats of the adjacent polygonal section located externally of the body, an adapter coupling having one end provided with a polygonal socket interchangeably drivingly ccoperable with said polygonal sections and being provided at its opposite end with female screw threads attachable to a driving source, and a pair of intermeshing bevel gears of different pitch diameters secured to said shafts in the spaces between said alined sets of bearings and being removable only through the adjacent body openings.

EDWARD W. RISI'OW.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 523,266 Cochran July 17, 1894 1,401,916 Muench Dec. 27, 1921 2,462,647 Koza Feb. 22, 1949 2,489,102 Moore Nov. 22, 1949 FOREIGN PATENTS Number Country Date 360,189 France Apr. 14, 1906 722,442 France Mar. 16, 1932 309,591 Italy July 11, 1933 597,762 Germany May 30, 1934 674,799 Germany Apr. 22, 1939 401,806 Italy Feb. 2, 1943 

